Search seems so simple. Give users a box and let them figure it out. Not so fast. Visitors simply expect great search everywhere online. Think about it this way: approximately 35-45% of your web traffic comes from organic search on an engine like Google or Bing. Naturally those users will want to leverage search on your site. If search is clunky, inaccurate, and/or incomplete, users will get frustrated and go back to Google—and possibly your competition.